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A Critique of Critical Speed Yaw Mark Research
Technical Paper
2012-01-0600
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Critical speed yaw marks are commonly used in collision reconstruction to estimate vehicle speed. Research and laboratory testing have demonstrated that critical speed calculations can be used to accurately estimate vehicle speed. Thus, the principles supporting critical speed yaw analysis are fundamentally and theoretically valid and are not being challenged in this study. However, there are observed and documented limitations with respect to the appropriate application and execution of critical speed yaw analysis. This paper reviews the published research to-date and identifies limitations of critical speed yaw analysis. Examples of collision scenes are provided which quantify the inaccuracies associated with the misuse of critical speed yaw calculations. Areas for further research are identified and detailed.
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Authors
Citation
Richardson, S., Orton, T., Josevski, N., Pok, W. et al., "A Critique of Critical Speed Yaw Mark Research," SAE Technical Paper 2012-01-0600, 2012, https://doi.org/10.4271/2012-01-0600.Also In
References
- Tipler, P. A. Mosca, G. P. Physics for scientists and engineers 5th Ed.) Macmillan 129 0716783398
- Klein, F. Sommerfeld, A. Nagem, R. J. Sandi, G. The Theory of the Top, Volume 1, Introduction to the Kinematics and Kinetics of the Top 978-0-8176-4720-9 2000
- Northwestern University Center for Public Safety Traffic Collision Investigation 9 th Ed 0-912642-09-2 2001 2006
- Gillespie, T. “Fundamentals of Vehicle Dynamics,” Society of Automotive Engineers, Inc. Warrendale, PA 978-1-56091-199-9 1992
- Fricke, L. B. Traffic Accident Reconstruction, Volume 2 of The Traffic Accident Investigation Manual 0-912642-07-6 1990
- Fricke, L. B. Traffic Crash Reconstruction 2 nd Edition 0-912642-03-3 2010
- Wong, J. Y. Theory of Ground Vehicles 3 rd Ed 0 471 35461 9 2001
- Mechanics of Pneumatic Tires Clarke, S. K. National Bureau of Standards 1971
- Milliken, W. Milliken, D. “Race Car Vehicle Dynamics,” Society of Automotive Engineers, Inc. Warrendale, PA 978-1-56091-526-3 1994
- Sakai, H. The Dynamic Properties of Tires Bulletin JSAE 3 70 71 1971 International Journal of Vehicle Design 2 1 1981 3 3 1982
- Blundell, M. Harty, D. The Multibody Systems Approach to Vehicle Dynamics 0 7506 5112 1 2004
- Genta, G. Motor Vehicle Dynamics, Modeling and Simulation, Series on Advances in Mathematics for Applied Sciences - Vol. 43 9810229119 1997
- Discussions (e-mails) between Brach, R. and Richardson, S. September 2011
- Yamazaki, S. Akasaka, T. Buckling Behavior in Contact Area of Radia Tire Structure and Skid Marks Left by Tires Society of Automotive Engineers - Japan, 885538 1988
- Yamazaki, S. Friction Coefficients of Tries and Skid Marks left by Tires International Workshop on Traffic Accident Reconstruction 12 13 November 1998 National Research Institute of Police Science Japan
- Lambourn, R. The Calculation of Motor Car Speeds from Curved Tyre Marks Journal of the Forensic Science Society 29 371 386 1989
- Reveley, M. Brown, D. Guenther, D. “A Comparison Study of Skid and Yaw Marks,” SAE Technical Paper 890635 1989 10.4271/890635
- Badger, J. Just How Critical is Critical Speed? Law & Order October November 1991
- Dickerson, C. Arndt, M. Arndt, S. Mowry, G. “Evaluation of Vehicle Velocity Predictions Using the Critical Speed Formula,” SAE Technical Paper 950137 1995 10.4271/950137
- Bellion, P. “Project Y.A.M. (Yaw Analysis Methodology) Vehicle Testing and Findings - Victoria Police, Accident Investigation Section,” SAE Technical Paper 970955 1997 10.4271/970955
- Sledge, N. Marshek, K. “Formulas for Estimating Vehicle Critical Speed From Yaw Marks - A Review,” SAE Technical Paper 971147 1997 10.4271/971147
- Hague, D. J. Lambourn, R. F. Turner, D. F. Critical Speed Studies I: The Accuracy of Speeds Calculated from Critical Curve Marks, and Their Striations Proceedings of the 3 rd National ITAI Conference Telford, England 1997
- Hague, D. J. Turner, D. F. Williams, A. J. Critical Speed Studies II: The Generation of Tyre Marks by Cornering Vehicles Proceedings of the 3 rd National ITAI Conference Telford, England 1997
- Turner, D. F. Maynard, S. A. Critical Speed Studies III: Computer Simulation of Vehicle Behaviour at the Limit of Adhesion Proceedings of the 3 rd National ITAI Conference Telford, England 1997
- Brach, R. “An Analytical Assessment of the Critical Speed Formula,” SAE Technical Paper 970957 1997 10.4271/970957
- Shelton, T. Validation of the Estimation of Speed from Critical Speed Scuffmarks” Accident Reconstruction Journal January February 1995
- Cannon, J. “A Study of Errors in Yaw-Based Speed Estimates Due to Effective Braking,” SAE Technical Paper 2003-01-0888 2003 10.4271/2003-01-0888
- Cliff, W. Lawrence, J. Heinrichs, B. Fricker, T. “Yaw Testing of an Instrumented Vehicle with and without Braking,” SAE Technical Paper 2004-01-1187 2004 10.4271/2004-01-1187
- Marks, C. Pavement Skid Resistance Measurement and Analysis in the Forensic Context Surface Friction Conference New Zealand 2005 http://sh20mountroskill.co.nz/technical/surfacefriction.jsp
- Bohan, T. L. Damask, A. C. Forensic Accident Investigation: Motor Vehicles 1-55834-254-0 1995
- Bohan, T. L. Damask, A. C. Forensic Accident Investigation: Motor Vehicles, 2006 Cumulative Supplement 1-55834-254-0 2006
- Lambourn, R. F. Jennings, P. W. Knight, I. Brightman, T. New and Improved Accident Reconstruction Techniques for Modern Vehicles Equipped with ESC Systems TRL Published Project Report PPR 223 2007 http://www.transportresearchfoundation.co.uk/PDF/Final%20Report%20-%20PPR223.PDF
- Rechnitzer, G. Richardson, S. Short, A. Orton, T. Chapter 140 Traffic Accidents Investigation Analysis and Reconstruction for: Expert Evidence Freckelton, I. Selby, H. Thomson Reuters Australia 2008 http://www.thomsonreuters.com.au/catalogue/productdetails.asp?id=8205
- Beauchamp, G. Hessel, D. Rose, N. Fenton, S. et al. “Determining Vehicle Steering and Braking from Yaw Mark Striations,” SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 291 307 2009 10.4271/2009-01-0092
- Amirault, G. MacInnis, S. “Variability of Yaw Calculations from Field Testing,” SAE Technical Paper 2009-01-0103 2009 10.4271/2009-01-0103
- Bartlet & Wright Yaw Tests on Pavement, Gravel, and Grass with ESC and ABS Braking Proceedings of the 1 st Joint ITAI-EVU Conference Hinckley, UK 2009
- Brach, R. Brach, R. “Modeling Combined Braking and Steering Tire Forces,” SAE Technical Paper 2000-01-0357 2000 10.4271/2000-01-0357
- Bakker, E. Nyborg, L. Pacejka, H. “Tyre Modelling for Use in Vehicle Dynamics Studies,” SAE Technical Paper 870421 1987 10.4271/870421
- Brach, R. Brach, M. “The Tire-For ce Ellipse (Friction Ellipse) and Tire Characteristics,” SAE Technical Paper 2011-01-0094 2011 10.4271/2011-01-0094